setup swap file for ubuntu


##SETUP SWAP

fallocate -l 1G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
echo "/swapfile   none    swap    sw    0   0"  >> /etc/fstab
echo "vm.swappiness=10" >> /etc/sysctl.conf

echo "vm.vfs_cache_pressure = 50" >> /etc/sysctl.conf

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